Looser fitting underpants keep testicles cool, resulting in 25% more sperm being produced
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Tight underwear really is linked to lower sperm counts in men
Wear Loose Underwear To Improve Your Sperm Production: Study
Boxers or briefs? Loose-fitting underwear may benefit sperm production
Unlocking Fertility Potential: A Deep Dive into Men's Underwear
Boxer Shorts Claim to Protect Testicles From Cellphone Radiation
Wearing boxer shorts boosts sperm count, scientists say
Scientists warn of sperm count crisis, The Independent
Sperm counts are down worldwide and researchers are discovering why
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